Question

Which one of the following pairs represents stereoisomerism?

• A. Chain isomerism and rotational isomerism
• B. Structural isomerism and geometric isomerism
• C. Linkage isomerism and geometric isomerism
• D. Optical isomerism and geometric isomerism

Answer 1

Answer: (D)

Optical isomerism and geometric isomerism

Optical isomerism (such as enantiomers and diasteroisomers) and geometric isomerism (cis trans isomerism) represents stereoisomerism.
Stereoisomers have the same molecular formula and same connectivity of atoms, but differ in the orientations of atoms.
Chain isomerism, position isomerism and functional group isomerism represents structural isomerism .